Facebook engineers’ computers were hacked using a zero-day Java attack that installed a collection of previously unseen malware. The attack did not expose customer data, and it was contained to the laptops of a small number of Facebook engineers. Facebook’s internal security team worked with a third party to “sinkhole” the attackers’ command server, taking over the network traffic coming into it from systems infected by its malware. Other companies who were affected by the same hacking campaign may not have been so lucky.”]